28864027 has 2 divisors, whose sum is σ = 28864028. Its totient is φ = 28864026.

The previous prime is 28864009. The next prime is 28864037. The reversal of 28864027 is 72046882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28864027 - 2⁷ = 28863899 is a prime.

It is equal to p_1791784 and since 28864027 and 1791784 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (28864037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14432013 + 14432014.

It is an arithmetic number, because the mean of its divisors is an integer number (14432014).

Almost surely, 2^28864027 is an apocalyptic number.

28864027 is a deficient number, since it is larger than the sum of its proper divisors (1).

28864027 is an equidigital number, since it uses as much as digits as its factorization.

28864027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 28864027 is about 5372.5251977073. The cubic root of 28864027 is about 306.7507552698.

The spelling of 28864027 in words is "twenty-eight million, eight hundred sixty-four thousand, twenty-seven".